•The socket can increase contact area between wrench and BB shell, especially for lightweight BB

•Disassemble and install Shimano® Hollowtech II, Truvativ® GXP, FSA® MegaExo, Campagnolo® Ultra-Torque, TOKEN® and many other external bearing crank set bottom brackets.

•Spec:
TB-BB40: Bottom bracket wrench includes a crank installation tool, TB-8911.
TB-BB41: Includes TB-BB40, crank installation tool TB-8911, adapter TB-BB18 for Shimano® SM-BB9000, SM-BB93 & TOKEN® adapter TB-BB19 for Shimano® SM-BBR60.